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Para‐ and Ortho‐Trions on a Ring: A Simple Model
Author(s) -
Römer R.A.,
Raikh M.E.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200110)227:2<381::aid-pssb381>3.0.co;2-o
Subject(s) - trion , antiparallel (mathematics) , exciton , electron , physics , quantization (signal processing) , semiconductor , ring (chemistry) , atomic physics , condensed matter physics , quantum mechanics , chemistry , magnetic field , organic chemistry , computer science , computer vision
Motivated by recent experiments on luminescence from semiconductor nanorings, we study theoretically the quantized states of a charged exciton (trion) in a ring geometry. In particular, we compare the energies of the states with antiparallel (para‐trion) and parallel (ortho‐trion) spin configurations of two electrons, that, together with a hole, constitute a trion. In order to assess the experimentally relevant domain of parameters, when the size quantization energy is comparable to the exciton binding energy, we adopt a simple model of an infinitely narrow ring and short‐range electron–electron and electron–hole interactions.